c size um2 batteries 1.carbon zinc battery,1.5 V 2. ... .93-0.98/doz 4.Min.order:240,000 pcs c size um2 batteries 1.metal top and tinplate bottom2.Super leak ... Standard(IEC 60085-2:2007)EVERBRIGHT2221 R14CUM-21.52420±2°C,3.9Ω, 24h/d, E.P.V. 0.9V-----≥120 ... Min20±2°C,20Ω, 4h/d, E.P.V. 0.9V900 Min≥1380 Min Product procedure: c size um2 batteries